Moment Of Inertia - Reduce MOI & Gain Horsepower
 

For the not so smart folks like me, I wanted to share some information I came across in my quest for power and understanding how things work.

This moments of inertia article made me fully understand how reducing weight gains horsepower.

http://www.stockcarracing.com/techar...moi/index.html

I can wait to feel MOI in the Z after replacing my flywheel, clutch, pistons and connecting rods with lighter components.

:thumbsup:

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

Your MOI will also improve with the much lighter wallet!

:-D:-D

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

Yeah, I know what you mean. Everything is expensive for this beast.

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

Wow, that some great information. I will have to test drive a bothers car that has made the switch. I have read about the gear rattle, just wonder if I can live with it when sitting behind the wheel.
Rich

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

I did the fidanza swap, If your trans has some wear, it will have more gear noise then others. On mine the difference was a good one in the low gears.
Spins the tires much easier. On mine I get no noise at idle but on light throttle I do. Well worth it mod.
Plan on there being noise.:mrgreen:

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

Rich,

Just a Kb7tif mentioned, I think from what I have heard the rattle is inevitable even if slight. A friend of mine here has the light weight flywheel with ZF6 on an LT1 and I can barely hear his if at all, not to say that mine will be the same. Another friend of mine that has a new Porsche 911 had the same results with the lightweight flywheel and even thought his rattle is more pronounced, I can live with it. I think the subject has been beat like a dead horse on other threads. Here is what Bill B from ZFdoc has to say about the noise:

The "at idle gear clatter" with LT5 engine and light weight flywheel
combination can range between "not that bad" down to "really bad" depending on the health/integrity of the ignition system. The
slightest miss in the ignition system will cause gear clatter to really be
present. There are a few tricks to minimizing this occurance of gear clatter:

1) Go through the transmission's main bearings setup to make sure that
the very thickest shim possible is installed at the front and rear main bearings as well as the counter shaft front main bearing with the retainer clips fully seated. I know this really helps based on experience. This takes
about one hour and $100 in small parts, gaskets and new oil.
2) replace the four of the eight coil fasteners with nylon fasteners which eliminate the coil's propensity to develop shorts at the coil plug-in lead ends.
3) New coils/wires/plugs are always better to do this with if they aren't already new.

He added to state: Ace Hardware sells nylon bolts the same thread size as the OEM coil fasteners (8 total). Take four nylon bolts and cut them to the correct length... results in lower propensity for the coil to seek/develop an altered ground path through the least durable portion of the coil at the fastener lug between the coil leads.

:thumbsup:

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

To me it goes like this, if you puttz around with your can you will see no benefit, and very well introduce fresh set of noises. If you like to wind that engine up then the fidanza is for you.

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

I guess it's time to go on a diet... How much horsepower will I gain if I lose 100lbs???? :mrgreen:

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

That's a good one!=D>

Re: Moment Of Inertia - Reduce MOI & Gain Horsepower
 

Hey Craig, thanks for posting this info!:cool::thumbsup:

I like the one about the nylon bolts.....I'm gonna look into that as I'm going to swap my top end parts and I bought new OE coils to replace my Jegs coils.